Obsamus bushnell



(No Medel.)

O. BUSHNELL.

SLATE CLEANER.

No. 284,537. Patented Sept. 4, 1883.

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. UNITED STATES PATENTA OFFICE.

oRsAMUs RUsHNELL, or BROOKLYN', NEW YORK, AssiGNoR rro HIMsELE AND FRANK ovERRURY, or sAME PLACE.

sLATE-CLEANER;

SPECIFICATION forming part of Letters Patent No. 284,537, dated September 4, 1883.

Application filed December 18, 1882. (No model.) v

To all whom it may concern: p

Be it known that I, ORsAMU'sBUsHNELL, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful ,5 Improvement in Cleaners for Slates and other various sizes, asa slate-cleaner, blackboarderaser, pencil-eraser, window-cleaner, floorcleaner, &c.; andit consists of a main body,

f preferably of wood, formed with a handle and cup portions. Into the cup portionV I insert compressed sponge or fibrous bark, (what is known as California bark,) and secure the same in place by glue, or otherwise, as may be preferable. Around the outside of the cup portion and thesponge I place a piece 'or section of rubbertubin g, and the same is stretched into place,- andthe end of said rubber tube comes flush with the end of the sponge or similar material.

p In the drawings, Figure I is a vertical section of the cleaner, and Fig. 2 is a sectional plan of the same at the lineJ :v w;

lIhe main body portion is composed of the handle a and inverted cup b, and it is made of wood, by preference, Non account of cheapness, although itf may be made of other material. The compressed sponge orbark cis securely glued or otherwise fastened in the inverted cup b at d, andV about half its length is containedwithin` said cup. rIhe india-rubber band or sectional tubing e surrounds the inverted cup b, and also the extended end of sponge or bark, and the outer edge of said rubber tubing is flush with the surface of sponge or bark, so that in use the two materials act together as an eraser.

-v When employed as a slate-cleaner, pencileraser, or blackboard-rubber, this device should be used dry; but when employed as a window-cleaner or floor-cleaner it should be moistened. l

The cleaner can be adapted for polishing metal and other substances, for surfacing wood,

and reducing or finishing various surfaces, by

the introduction into 'or impregnation of the sponge with such substances as sand, emery, silicon, brick-dust, 8vo., and in this form it will effect the same objects as sand-paper, emery-paper, and cloth, 86o., andin a superior manner. The sponges can also be saturated with acids f or cleaning purposes.

desired size or shape in adapting it to the various uses `to whichit may be put.

r I claim as my invention The cleaner or eraser composed of the handle a and inverted cup b, the sponge or bark filling o, and the rubber tubing d, surround- .ing the filling and cup, substantially as. set

forth. 4 p

' Signed by me this 15th day of December A. D. 1882.

ORSAMUS BU'SHNELL.

Witnesses:

Y GEO. T. PINQKNEY,

HAROLD SERRELL.

Ihis cleaner or eraser can be made of any 

